modern-swift

Write concurrent Swift code using async/await, actors, and Sendable.

Updated Jan 29, 2026
One-click install
npx skills add https://github.com/liujinwakayakulie/iOS-dev-kit --skill modern-swift
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: modern-swift
Source: https://github.com/liujinwakayakulie/iOS-dev-kit/tree/main/ios-dev-kit/skills/modern-swift
Command: npx skills add https://github.com/liujinwakayakulie/iOS-dev-kit --skill modern-swift

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Swift 6 introduces safe concurrency features to prevent data races and improve reliability by using async/await, actors, and Sendable.

Core Features & Use Cases

  • Async/await, actors, and Sendable to write safe concurrent Swift code
  • TaskGroup and structured concurrency to manage parallel work
  • MainActor usage for safe UI updates and distributed data handling
  • Use cases include iOS UI apps, network data fetching, and background processing

Quick Start

Use the modern-swift skill to implement a concurrent fetch function with async/await, protect shared state with an actor, and safely update the UI on the main thread.

Frequently Asked Questions about modern-swift

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
What is the best way to write safe concurrent Swift code to prevent data races?

Safe concurrent Swift code uses async/await, actors, and Sendable to prevent data races. By adopting Swift 6 strict concurrency checks, you isolate shared mutable state and ensure parallel tasks execute without memory conflicts.

How do I use async/await and TaskGroup for parallel network requests in iOS?

Use async/await and TaskGroup for parallel network requests in iOS by structuring concurrent fetch operations within a task group. This manages parallel work safely, collects network data efficiently, and maintains UI responsiveness during background processing.

Why should I use @MainActor for UI updates in Swift 6?

You should use @MainActor for UI updates in Swift 6 to guarantee safe main thread execution. It enforces structured concurrency by isolating UI modifications to the main thread, preventing data races between background tasks and the UI layer.

When do I need to use Sendable in Swift structured concurrency?

You need to use Sendable in Swift structured concurrency when passing data across concurrent execution contexts. It enforces strict compile-time checks, ensuring the data type is safe to share between actors and async tasks without causing races.

Does Swift 6 strict concurrency work with existing iOS background processing tasks?

Swift 6 strict concurrency works with existing iOS background processing tasks by migrating them to structured concurrency. You wrap parallel work in TaskGroups and protect shared state using actors to maintain reliability while keeping the UI responsive.